TY - JOUR
T1 - Quality control in cone-beam computed tomography (CBCT) EFOMP-ESTRO-IAEA protocol (summary report)
AU - de las Heras Gala, Hugo
AU - Torresin, Alberto
AU - Dasu, Alexandru
AU - Rampado, Osvaldo
AU - Delis, Harry
AU - Hernández Girón, Irene
AU - Theodorakou, Chrysoula
AU - Andersson, Jonas
AU - Holroyd, John
AU - Nilsson, Mats
AU - Edyvean, Sue
AU - Gershan, Vesna
AU - Hadid-Beurrier, Lama
AU - Hoog, Christopher
AU - Delpon, Gregory
AU - Sancho Kolster, Ismael
AU - Peterlin, Primož
AU - Garayoa Roca, Julia
AU - Caprile, Paola
AU - Zervides, Costas
PY - 2017/7/1
Y1 - 2017/7/1
N2 - The aim of the guideline presented in this article is to unify the test parameters for image quality evaluation and radiation output in all types of cone-beam computed tomography (CBCT) systems. The applications of CBCT spread over dental and interventional radiology, guided surgery and radiotherapy. The chosen tests provide the means to objectively evaluate the performance and monitor the constancy of the imaging chain. Experience from all involved associations has been collected to achieve a consensus that is rigorous and helpful for the practice. The guideline recommends to assess image quality in terms of uniformity, geometrical precision, voxel density values (or Hounsfield units where available), noise, low contrast resolution and spatial resolution measurements. These tests usually require the use of a phantom and evaluation software. Radiation output can be determined with a kerma-area product meter attached to the tube case. Alternatively, a solid state dosimeter attached to the flat panel and a simple geometric relationship can be used to calculate the dose to the isocentre. Summary tables including action levels and recommended frequencies for each test, as well as relevant references, are provided. If the radiation output or image quality deviates from expected values, or exceeds documented action levels for a given system, a more in depth system analysis (using conventional tests) and corrective maintenance work may be required.
AB - The aim of the guideline presented in this article is to unify the test parameters for image quality evaluation and radiation output in all types of cone-beam computed tomography (CBCT) systems. The applications of CBCT spread over dental and interventional radiology, guided surgery and radiotherapy. The chosen tests provide the means to objectively evaluate the performance and monitor the constancy of the imaging chain. Experience from all involved associations has been collected to achieve a consensus that is rigorous and helpful for the practice. The guideline recommends to assess image quality in terms of uniformity, geometrical precision, voxel density values (or Hounsfield units where available), noise, low contrast resolution and spatial resolution measurements. These tests usually require the use of a phantom and evaluation software. Radiation output can be determined with a kerma-area product meter attached to the tube case. Alternatively, a solid state dosimeter attached to the flat panel and a simple geometric relationship can be used to calculate the dose to the isocentre. Summary tables including action levels and recommended frequencies for each test, as well as relevant references, are provided. If the radiation output or image quality deviates from expected values, or exceeds documented action levels for a given system, a more in depth system analysis (using conventional tests) and corrective maintenance work may be required.
KW - Cone-beam CT
KW - Diagnostic radiology
KW - Ionizing radiation
KW - Quality control
KW - Radiation protection
UR - http://www.scopus.com/inward/record.url?scp=85020270248&partnerID=8YFLogxK
U2 - 10.1016/j.ejmp.2017.05.069
DO - 10.1016/j.ejmp.2017.05.069
M3 - Article
C2 - 28602688
AN - SCOPUS:85020270248
SN - 1120-1797
VL - 39
SP - 67
EP - 72
JO - Physica Medica
JF - Physica Medica
ER -